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October 29, 2026

Arizona Confirms First New World Screwworm Case in a Dog

  • The dog was found in Cochise County with a wound infested by maggots; testing confirmed screwworm, and the animal is receiving veterinary care.
  • The USDA restricted animal movement within 20 kilometers of the case and is increasing surveillance and releasing sterile flies.
  • The USDA has reported 71 cases since June, with 18 active as of Wednesday; it plans to resume livestock imports at Nogales on Nov. 30 if safety conditions are met.

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